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GB/T 7717.15-2018 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7717.15-2018: Acrylonitrile for industrial use -- Part 15: Determination of content of p-hydroxyanisole
Status: Valid

GB/T 7717.15: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7717.15-2018	199	Add to Cart	3 days	Acrylonitrile for industrial use -- Part 15: Determination of content of p-hydroxyanisole	Valid
GB/T 7717.15-1994	159	Add to Cart	2 days	Acrylonitrile for industrial use. Determination of content of p-hydroxylanisole. Spectrophotometric method	Obsolete

Similar standards

GB/T 3729 GB/T 6818 GB/T 6820 GB/T 7717.16 GB/T 7717.12 GB/T 7717.11

Basic data

Standard ID: GB/T 7717.15-2018 (GB/T7717.15-2018)
Description (Translated English): Acrylonitrile for industrial use -- Part 15: Determination of content of p-hydroxyanisole
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G17
Classification of International Standard: 71.080.30
Word Count Estimation: 10,119
Date of Issue: 2018-03-15
Date of Implementation: 2018-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 7717.15-2018: Acrylonitrile for industrial use -- Part 15: Determination of content of p-hydroxyanisole

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Acrylonitrile for industrial use--Part 15. Determination of concent of p-hydroxylanisole ICS 71.080.30 G17 National Standards of People's Republic of China Replacing GB/T 7717.15-1994 Acrylonitrile for industrial use Part 15. Determination of p-hydroxyanisole content Part 15. Determinationofconcentofp-hydroxylanisole Published by.2018-03-15 2018-10-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released

Foreword

GB/T 7717 "Acrylonitrile for Industry" has or plans to issue the following parts. --- Part 1. Specifications; --- Part 5. Determination of acidity, pH, and titration values; --- Part 8. Determination of total aldehyde content by spectrophotometric method; --- Part 9. Determination of total cyanide content by titration; --- Part 10 . Determination of peroxide content ; Spectrophotometric method ; --- Part 11. Determination of iron, copper content spectrophotometric method; --- Part 12 . Determination of purity and impurity content by gas chromatography ; --- Part 15. Determination of p-hydroxyanisole content; Part 16 . Determination of iron content by graphite furnace atomic absorption spectrometry ; -- Part 17 . Determination of copper content by graphite furnace atomic absorption spectrometry This section is part 15 of GB/T 7717. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/T 7717.15-1994 "Determination of p-hydroxyanisole content in acrylonitrile for industrial use spectrophotometric method", this Part The main technical changes compared with GB/T 7717.15-1994 are as follows. ---Modified the standard name; --- Modify the scope (see Chapter 1, Chapter 1 of the.1994 edition); --- Increased gas chromatography (see Chapter 4, Chapter 5); --- Increased quality assurance and control (see Chapter 6); --- Modify the unit of measurement for p-hydroxyanisole content (mass fraction) from % to mg/kg. This part was proposed by China Petroleum & Chemical Corporation. This part is under the jurisdiction of the Petrochemical Subcommittee (SAC/TC63/SC4) of the National Chemical Standardization Technical Committee. This section was drafted by. China Petroleum & Chemical Corporation Shanghai Petrochemical Research Institute, Shanghai Petrochemical Corporation, Shanghai Secco Petrochemical Co., Ltd. The main drafters of this section. Peng Zhenlei, Qian Senzhi, Liu Zhaoxia, Zhang Yuhong, Zhu Yuping, Fan Chenliang, and Ge Qinfen. The previous editions of the standards replaced by this section are. --- GB/T 7717.15-1994. Acrylonitrile for industrial use Part 15. Determination of p-hydroxyanisole content Caution - This section is not intended to describe all safety issues related to its use. Users have the responsibility to take appropriate safety and Health measures to ensure compliance with the provisions of the relevant national laws and regulations.

1 Scope

This part of GB/T 7717 specifies the spectrophotometric method and gas phase for the determination of p-hydroxyanisole (MEHQ) in acrylonitrile for industrial use. Chromatography, repeatability, quality assurance and control, test reports. This part of the spectrophotometric method is applicable to industries where the content of p-hydroxyanisole is not less than 5mg/kg and the color degree conforms to the requirements of GB/T 7717.1. Determination of acrylonitrile; This part of gas chromatography is suitable for industrial use with p-hydroxy anisole content in the range of 1 mg/kg to 100 mg/kg. Determination of acrylonitrile. Note. When using spectrophotometric method, impurities absorbed at 295nm all interfere with the determination. Experience shows that it may produce in acrylonitrile that exceeds storage guarantee period. Absorbed impurities are generated at this wavelength.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 3723 General rules for sampling safety of industrial chemical products GB/T 6678 sampling rules for chemical products GB/T 6680 sampling principle of liquid chemical products GB/T 6682 Analysis Laboratory Water Specifications and Test Methods GB/T 7717.1 Acrylonitrile for industrial use Part 1. Specifications GB/T 8170 Representation and Determination of Numerical Rounding Rules and Limit Values

3 Spectrophotometry

3.1 Principle The absorbance of p-hydroxyanisole in the sample was measured directly at 295 nm using an ultraviolet spectrophotometer, and the hydroxyl was determined on the basis of a standard curve. The content of benzyl anisole. 3.2 Reagents and materials Unless otherwise stated, the reagents used were all analytically pure and the water used complied with the tertiary water specification specified in GB/T 6682. 3.2.1 p-hydroxyanisole. purity not less than 99% (mass fraction). 3.2.2 Sodium hydroxide solution. 4% (mass fraction) of aqueous solution. 3.2.3 Acrylonitrile without p-hydroxyanisole. Into a 500-mL separatory funnel, inject 100 mL of acrylonitrile and.200 mL of sodium hydroxide solution. The liquid (3.2.2) is shaken, the aqueous layer is removed, and the acrylonitrile layer is retained. Take another acrylonitrile, repeat the above extraction process, collect about 500mL of propylene Nitrile. The treated acrylonitrile is then distilled to collect a middle distillate having a boiling point of 75.5°C to 79.5°C. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 7717.15-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 7717.15-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 7717.15-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7717.15-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 7717.15-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7717.15-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.